665720385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1621}}^1$

素因数の和:1790

約数の個数: 64

約数和(自身を含む): 1233239040

約数和(自身を除く): 567518655

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 131, 165, 209, 285, 393, 627, 655, 1045, 1441, 1621, 1965, 2489, 3135, 4323, 4863, 7205, 7467, 8105, 12445, 17831, 21615, 24315, 27379, 30799, 37335, 53493, 82137, 89155, 92397, 136895, 153995, 212351, 267465, 338789, 410685, 461985, 637053, 1016367, 1061755, 1693945, 2335861, 3185265, 4034669, 5081835, 7007583, 11679305, 12104007, 20173345, 35037915, 44381359, 60520035, 133144077, 221906795, 665720385]

約数ペア:

[(1, 665720385), (3, 221906795), (5, 133144077), (11, 60520035), (15, 44381359), (19, 35037915), (33, 20173345), (55, 12104007), (57, 11679305), (95, 7007583), (131, 5081835), (165, 4034669), (209, 3185265), (285, 2335861), (393, 1693945), (627, 1061755), (655, 1016367), (1045, 637053), (1441, 461985), (1621, 410685), (1965, 338789), (2489, 267465), (3135, 212351), (4323, 153995), (4863, 136895), (7205, 92397), (7467, 89155), (8105, 82137), (12445, 53493), (17831, 37335), (21615, 30799), (24315, 27379)]